diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..5b6a0652566d10360493952aec6d4a4febc77083
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.Rproj.user
+.Rhistory
+.RData
+.Ruserdata
diff --git a/module2/exo1/toy_document_fr.Rmd b/module2/exo1/toy_document_fr.Rmd
index 5ab10163e4438c64e65d1d1d2ecc0b34b83265db..67cb72f55b1114c0285b36c4214056344eca3aa5 100644
--- a/module2/exo1/toy_document_fr.Rmd
+++ b/module2/exo1/toy_document_fr.Rmd
@@ -5,6 +5,25 @@ date: "30 aout 2022"
 output: html_document
 ---
 
+#  En demandant à la lib maths
+Mon ordinateur m’indique que π vaut approximativement
+
+```{r}
+pi
+```
+
+#En utilisant la méthode des aiguilles de Buffon
+Mais calculé avec [la méthode des aiguilles de Buffon]  (https://fr.wikipedia.org/wiki/Aiguille_de_Buffon) , on obtiendrait comme approximation :
+
+```{r}
+set.seed(42)
+N = 100000
+x = runif(N)
+theta = pi/2*runif(N)
+2/(mean(x+sin(theta)>1))
+```
+
+
 
 ```{r setup, include=FALSE}
 knitr::opts_chunk$set(echo = TRUE)
diff --git a/mooc-rr.Rproj b/mooc-rr.Rproj
new file mode 100644
index 0000000000000000000000000000000000000000..8e3c2ebc99e2e337f7d69948b93529a437590b27
--- /dev/null
+++ b/mooc-rr.Rproj
@@ -0,0 +1,13 @@
+Version: 1.0
+
+RestoreWorkspace: Default
+SaveWorkspace: Default
+AlwaysSaveHistory: Default
+
+EnableCodeIndexing: Yes
+UseSpacesForTab: Yes
+NumSpacesForTab: 2
+Encoding: UTF-8
+
+RnwWeave: Sweave
+LaTeX: pdfLaTeX